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Unread 08-04-2014, 09:09
Oblarg Oblarg is offline
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AKA: Eli Barnett
FRC #0449 (The Blair Robot Project)
Team Role: Mentor
 
Join Date: Mar 2009
Rookie Year: 2008
Location: Philadelphia, PA
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Re: Main breaker tripping, dead CIM

Thanks for all the advice. We've decided the safest/best option is to switch our gearing to 7.44:1 (or possibly 8:1 - any thoughts on which of these two would be better?) - we'll lose some top speed over where we were at DC, but gain a bit of pushing power and not compromise our ability to play offense. The only other solution that doesn't compromise drive performance would be to take off our roller arm and stop using the compressor, to put us back in the situation we were in at Greater DC, and we don't think that is acceptable. After all, we were only in that situation at Greater DC due to massive failure of multiple parts on the arm; it's ironic that the hardware failures, in hindsight, ultimately helped us, but we do not wish to intentionally remove most of the robot that our students spent so much effort building.

In the future, we will likely pursue 2-speed 6CIM drives; I am sold on the 6CIM drive after our performance at DC this year (we were a major contributor on the winning alliance due to our drive power and little else), but I had not realized how much strain it puts on the FRC batteries.
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Member, FRC Team 449: 2007-2010
Drive Mechanics Lead, FRC Team 449: 2009-2010
Alumnus/Technical Mentor, FRC Team 449: 2010-Present
Lead Technical Mentor, FRC Team 4464: 2012-2015
Technical Mentor, FRC Team 5830: 2015-2016